Pinning to the physically closest core is a bit misleading. Take a look at output from something like `lstopo` [https://www.open-mpi.org/projects/hwloc/ https:/

Pinning to the physically closest core is a bit misleading. Take a look at output from something like `lstopo` [https://www.open-mpi.org/projects/hwloc/ https://www.open-mpi.org/projects/hwloc/], where you can filter pids across the NUMA topology and trace which components are routed into which nodes. Pin the network based workloads into the corresponding NUMA node and isolate processes from hitting the IRQ that drives the NIC.